OnTileDownloaded() Question

When using the OnlineMapsCache component, it appears OnTileDownloaded() is not called after you've ..um... "been" to that part of the map. I'm assuming it's because that tile is already downloaded and in the cache hence OnTileDownloaded doesn't get called again.

Is there an equivalent method that I can use in this situation? Like OnlineMapsCache.OnTileLoaded() or something?